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Radiant|Lab Grown|IGI

1.72ct E IF Radiant Lab Grown Diamond

GD • E/IF • IGI LG745520505

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG745520505

Diamond specifications and retailer prices

From $5,124 AUD
$3,600 USD
As of October 29, 2026
2 retailers carry this diamond
Most expensive: $5,124 AUD at Brilliant Earth
View at Brilliant Earth

About this 1.72ct lab-grown radiant diamond

This 1.72ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG745520505 or 745520505. Listed at 2 retailers as of October 29, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.72
Carat
E
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle52.8°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG745520505
Dimensions8.29 × 6.06 × 4.02 mm
L/W Ratio1.37
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.29 mm6.06 mm1.72 ctE / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG745520505
Side View
Table 64.0%Crown 52.8°Girdle: MediumPavilion 38°Culet: NoneDepth 66.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $5,124 AUD|Low: $346 AUD|High: $6,975 AUD|Avg: $1,986 AUD|-7.0%
Brilliant Earth
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 14
September 2, 2026
Retailer 14$346 AUD
Retailer 4$769 AUD
Retailer 2$818 AUD
Retailer 10$853 AUD
Retailer 8$893 AUD
Retailer 7$922 AUD
Retailer 6$1,129 AUD
Retailer 13$1,514 AUD
Retailer 5$1,802 AUD
Retailer 12$1,829 AUD
Retailer 11$2,080 AUD
Retailer 3$2,104 AUD
Retailer 9$3,448 AUD
Brilliant Earth$5,124 AUD

68 data points across 14 retailers

2 retailers

B
Retailer 1
-
$3,448 AUD
$2,423 USD
Price last confirmed 70 days ago
Most Expensive
C
Brilliant Earth
16452203A · Oct 29
$5,124 AUD
$3,600 USD
View
1 more retailer has this diamond

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.72ct Radiant
$5,124 AUD